The GetBkMode function returns the current background mix mode for a specified device context. The background mix mode of a device context affects text, hatched brushes, and pen styles that are not solid lines.
int GetBkMode(
HDC hdc // handle to device context of interest
);
If the function succeeds, the return value specifies the current background mix mode, either OPAQUE or TRANSPARENT.
If the function fails, the return value is zero.
Windows CE: The BkMode value is stored internally as a single byte.
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in wingdi.h.
Import Library: Use gdi32.lib.
Painting and Drawing Overview, Painting and Drawing Functions, GetBkColor, SetBkMode